Just to be clear, I am not entirely hostile to the idea here. I just think that there are plenty of cases where generating high quality printed content or the like doesn't work with it and templating is a lot cleaner in those environments. And when your application already requires templating for a reason like that, adding an entirely different way of handling another output format adds needless complexity.

One of the useful applications of dools' ideas is that you could have a mockup which included lorem ipsums or other dummy text. This would make it easier for web developers to test layout.

OTOH, as I say, I am not at all convinced that it is a net win for programs that generate multiple formats of output./